package com.mpp.common.handler;

import com.mpp.common.exception.DemoModeException;
import com.mpp.common.exception.MyServiceException;
import com.mpp.common.result.Result;
import com.mpp.common.util.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;
import java.nio.file.AccessDeniedException;

/**
 * @author MMDZ
 * @date 2022/8/16 15:20
 * @description TODO 全局异常处理器
 */
@RestControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public Result handleException(Exception e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
        return Result.fail().message(e.getMessage());
    }

    /**
     * 权限校验异常
     */
    @ExceptionHandler(AccessDeniedException.class)
    public Result handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
        return Result.fail().code(HttpStatus.FORBIDDEN.value()).message("没有权限，请联系管理员授权");
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public Result handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
                                                      HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return Result.fail().message(e.getMessage());
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(MyServiceException.class)
    public Result handleServiceException(MyServiceException e, HttpServletRequest request) {
        log.error(e.getMessage(), e);
        Integer code = e.getCode();
        return StringUtils.isNotNull(code) ? Result.fail().code(code).message(e.getMessage()) : Result.fail().message(e.getMessage());
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public Result handleRuntimeException(RuntimeException e, HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
        return Result.fail().message(e.getMessage());
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public Result handleBindException(BindException e) {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return Result.fail().message(message);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Result handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
        log.error(e.getMessage(), e);
        String message = e.getBindingResult().getFieldError().getDefaultMessage();
        return Result.fail().message(message);
    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public Result handleDemoModeException(DemoModeException e) {
        return Result.fail().message("演示模式，不允许操作!!!");
    }

}
